<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div
        class="cart-body"
        v-for="(shopCart, index) in shopCartList"
        :key="index"
      >
        <ul
          class="cart-list"
          v-for="cartInfo in shopCart.cartInfoList"
          :key="cartInfo.id"
        >
          <li class="cart-list-con1">
            <input
              type="checkbox"
              name="chk_list"
              :checked="cartInfo.isChecked"
              @click="updateCheckedOne(cartInfo.skuId, cartInfo.isChecked)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="cartInfo.imgUrl" />
            <div class="item-msg">
              {{ cartInfo.skuName }}
            </div>
          </li>
          <!-- <li class="cart-list-con3">
            <div class="item-txt">语音升级款</div>
          </li> -->
          <li class="cart-list-con4">
            <span class="price">{{ cartInfo.skuPrice }}</span>
          </li>
          <li class="cart-list-con5">
            <a
              href="javascript:void(0)"
              class="mins"
              @click="updateNum(cartInfo.skuNum - 1, cartInfo)"
              >-</a
            >
            <input
              autocomplete="off"
              type="text"
              :value="cartInfo.skuNum"
              minnum="1"
              class="itxt"
              @change="updateNum($event.target.value * 1, cartInfo)"
            />
            <a
              href="javascript:void(0)"
              class="plus"
              @click="updateNum(cartInfo.skuNum + 1, cartInfo)"
              >+</a
            >
          </li>
          <li class="cart-list-con6">
            <!-- 计算单个总价格 -->
            <span class="sum">{{
              ItemAllPrice(cartInfo.skuNum, cartInfo.skuPrice)
            }}</span>
          </li>
          <li class="cart-list-con7">
            <a href="javascript:;" class="sindelet" @click="deleteOne(cartInfo.skuId)">删除</a>
            <br />
            <a href="#none">移到收藏</a>
          </li>
        </ul>

        <!-- <ul class="cart-list">
          <li class="cart-list-con1">
            <input type="checkbox" name="chk_list" id="" value="">
          </li>
          <li class="cart-list-con2">
            <img src="./images/goods2.png">
            <div class="item-msg">华为（MIJIA） 华为metaPRO 30 浴霸4摄像 超清晰</div>
          </li>
          <li class="cart-list-con3">
            <div class="item-txt">黑色版本</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">5622.00</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" class="mins">-</a>
            <input autocomplete="off" type="text" value="1" minnum="1" class="itxt">
            <a href="javascript:void(0)" class="plus">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">5622</span>
          </li>
          <li class="cart-list-con7">
            <a href="#none" class="sindelet">删除</a>
            <br>
            <a href="#none">移到收藏</a>
          </li>
        </ul>

        <ul class="cart-list">
          <li class="cart-list-con1">
            <input type="checkbox" name="chk_list" id="" value="">
          </li>
          <li class="cart-list-con2">
            <img src="./images/goods3.png">
            <div class="item-msg">iphone 11 max PRO 苹果四摄 超清晰 超费电 超及好用</div>
          </li>
          <li class="cart-list-con3">
            <div class="item-txt">墨绿色</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">11399.00</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" class="mins">-</a>
            <input autocomplete="off" type="text" value="1" minnum="1" class="itxt">
            <a href="javascript:void(0)" class="plus">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">11399</span>
          </li>
          <li class="cart-list-con7">
            <a href="#none" class="sindelet">删除</a>
            <br>
            <a href="#none">移到收藏</a>
          </li>
        </ul> -->
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" v-model="checkAll" />
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none" @click="deleteAllChecked()">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">
          已选择 <span>{{ checkedNum }}</span
          >件商品
        </div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ checkedPrice }}</i>
        </div>
        <div class="sumbtn">
          <router-link class="sum-btn" to="/trade">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapState } from "vuex";
export default {
  name: "ShopCart",

  computed: {
    //购物车数据
    ...mapState({
      shopCartList: (state) => state.shopcart.shopCartList,
    }),

    //计算已经选中商品的数量
    checkedNum() {
      return this.shopCartList.reduce((prev, element) => {
        return (
          prev +
          element.cartInfoList.reduce((prev1, elem) => {
            if (elem.isChecked) return prev1 + elem.skuNum;
            else return prev1;
          }, 0)
        );
      }, 0);
    },

    //计算已选中的商品总价格
    checkedPrice() {
      return this.shopCartList.reduce((prev, element) => {
        return (
          prev +
          element.cartInfoList.reduce((prev1, elem) => {
            if (elem.isChecked) return prev1 + elem.skuNum * elem.skuPrice;
            else return prev1;
          }, 0)
        );
      }, 0);
    },

    //计算是否全选
    checkAll: {
      get() {
        return this.shopCartList.every((element) => {
          return element.cartInfoList.every((element) => {
            return element.isChecked === 1;
          });
        });
      },
      async set(value) {
        let isChecked = value ? 1 : 0;
        let skuIds = [];
        this.shopCartList.forEach((element) => {
          element.cartInfoList.forEach((elem) => {
            if (elem.isChecked !== isChecked) skuIds.push(elem.skuId);
          });
        });
        try {
          await this.$store.dispatch('reqUpdateShoppingCartCheckedAll',{ isChecked, skuIds })
          alert("更新成功");
          this.getShopCartList();
        } catch (error) {
          alert("更新失败");
        }
      },
    },
  },
  methods: {
    //获取购物车列表
    getShopCartList() {
      this.$store.dispatch("getShopCartList");
    },
    //计算单个总价格
    ItemAllPrice(num, price) {
      return num * price;
    },

    //修改购物车单个物品数量
    async updateNum(num, cartInfo) {
      try {
        let updateNum = num - cartInfo.skuNum;
        if (num < 1) updateNum = 1 - cartInfo.skuNum;
        await this.$store.dispatch("addOrUpdateShoppingCart", {
          skuId: cartInfo.skuId,
          skuNum: updateNum,
        });
        alert("更新成功!");
        this.getShopCartList();
      } catch (error) {
        alert("更新失败");
      }
    },

    //修改单个选中的状态
    async updateCheckedOne(skuId, isChecked) {
      try {
        isChecked = isChecked ? 0 : 1;
        await this.$store.dispatch("updateShoppingCartCheckedOne", {
          skuId,
          isChecked,
        });
        alert("更新成功");
        this.getShopCartList();
      } catch (error) {
        alert("更新失败");
      }
    },

    //删除一个商品
    async deleteOne(skuId){
      try {
        await this.$store.dispatch('deleteShoppingCartOne',skuId)
        alert('删除成功')
        this.getShopCartList()
      } catch (error) {
        alert('删除失败')
      }
    },

    //删除所有选中的商品
    async deleteAllChecked(){
      const skuIds=[]
      this.shopCartList.forEach((element)=>{
          element.cartInfoList.forEach((elem)=>{
              if(elem.isChecked===1) skuIds.push(elem.skuId)
          })
      })
      try {
        await this.$store.dispatch('deleteShoppingCartAllChecked',skuIds)
        alert('删除成功')
        this.getShopCartList()
      } catch (error) {
        alert('删除失败')
      }
    }
  },

  mounted() {
    //发送请求获取购物车列表
    this.getShopCartList();
  },
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 15%;
        }

        .cart-list-con2 {
          width: 35%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        // .cart-list-con3 {
        //   width: 20.8333%;

        //   .item-txt {
        //     text-align: center;
        //   }
        // }

        .cart-list-con4 {
          width: 10%;
        }

        .cart-list-con5 {
          width: 17%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 10%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 13%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>